Buffing-wheel.



W. W. GROOKBR.

BUFPING WHEEL.

ArPLIoATIoN rum ooi'A 12, 1910.

994,504, Y Patented Jun`e6,1911.

.x 25.1# (17%.. 'cys UNTTED STATES PATENT orme-E.

WILLIAMVINSLOW CROOKER, 0F EVERETT, MASSACHUSETTS, ASSIGNOR 0F ONE- TOHENRY C. LITTLE, 0E WEST NEWTON, MASSACHUSETTS.

BUFFING-WHEEL.

Specification of Letters Patent.

Patented June 6, 1911.

Application filed October 12, 1910. Serial No. 586,705.

' tion of the upper which forms one side of the crease the enamelsurface of the upper when the latter or any part thereof is made ofso-called patent. leather. In repairing cracks in patent leatherextending into the crease between the upper and sole or Welt, it

.is necessary te remove the glaze or enamelI in which the crack isformed and to dcnude the upper, not only along the crack, but on bothsides thereof. y

The tool or appliance embodying my in# vcntion as hereinafter described,is adapted to enter the above-mentioned crease a'nd denude any desiredportion of the upper, forming one side of the crease Without injury t0the upper, or to the portion of the sole or welt forming the oppositeside of the crease.

The invention consists in the improved tool or appliance hereinafterreferred to as a buling wheel, which I will now proceed to describe andclaim.

Of the accompanying drawings which form a'part of thisspecificatiom-Fiffure l represents a side view of my improved buffingwheel, taken from the inner side thereof and showing in section theshaft on which the wheel is mounted. Fig. 2 represents a section on line2-2 of Fig. 1. Fig. 3 represents a perspective view of the compressiblepad hereinafter referred to, forming a part of the bulling wheel.

Similar reference characters indicate the same or similar parts in allthe figures.

In the drawings, 12 represents a rigid disk of any suitable material,preferably aluminum or other metal, the disk being (lished so that ithas a projecting side and a recessed side. the former being preferablyconvex and the latter concave, as shown by Fig. 2. The sides of the diskconverge from the center toward the periphery, so that the latter isreduced to a relatively thin edge 15 adapted to enter the crease betweenthe upper l13 the sole 14 of a boot or shoe. The disk is providedcentrally with a hub 16 which projects from the recessed side of thedisk and is internally threaded to engage the threaded portion of arotary shaft 17 which imparts rotation to the disk.

18 represents an annular pad of compressible elastic material,preferably rubber, said pad being substantially V shape in cross sectionand adapted to bear on the outer and inner sides of the disk and tocover the periphery of the same, the elasticity of the pad being suchthat it is adapted to be sprung into place upon the disk.

19 represents a flexible cover 0f any material suitable for the removalof the glaze from patent leather, the preferred material of the coverbeing textile fabric such as cotton duck or canvas. The cover ispreferably composed of a single substantially circular sheet of greaterdiameter than the disk, the margin of the cover being preferablyprovided with a gathering cord or string 20 contained in a pocket formedby liemming the margin of the cover and adapted to contract the marginalportion of the cover and hold the cover bent or folded across the marginof the pad and disk. The central or body portion of the cover is placedagainst the projecting side of the disk and covers the same, themarginal portion of the cover being folded across the edgesof the padand disk and then contracted by suitably manipulating the tying cord 20.

21 represents an annular clamping plate Which is adapted to surround thehub 16 and is movable thereon toward and from the recessed side of thedisk, the outer edge of the clamping plate being adapted to bear on thecontracted marginal portion of the cover and press the latter', togetherwith the corresponding portion vof the pad 18 against disk to permit theapplication of the cover thereto.

The described appliance is `particularly adapted to remove the glazefrom patent leather at one side of a crease as stated, the cloth coveracting when the appliance is rapidly rotated to quickly remove the glazeWithout injuring the grained surface of the leather on which the glazeor enamel coating is formed. The pad 18 forms a yielding support for theportion of the cover which acts on the upper leather and also yieldinglysupports the portion of the cover which is in rubbing contact with theWelt or sole so that the latter is not injured or abraded.

In practice, the glaze on the upper leather, is rendered brittle byapplying a volatile solvent such as acetone to the portion of the glazewhich is to be removed, just before the operation, the solvent renderingthe glaze brittle so that it is adapted to be quickly abraded andremoved by the cloth cover. Said cover is not an abradant of the grainedsurface of the upper leather nor of the grained surface of the Weltagainst which the cover rubs during the operation.

It is obvious that the described appliance may be used forvotherpurposes requiring the application of a rubbing surface to one or bothsides of the crease between a boot or shoe upper and a weltor innersole. lt is also obvious that any other suitable means may be employedin securing the cover in its working position.

I claim:

l. A bufiing wheel comprising a disk of rigid material having a thinperiphery and dished to form a projecting side and a recessed side, anelastic annular pad substan` 'tially V shaped in cross section andadapted to bear on the rigid periphery and portions of the sides of therigid disk, a flexible cover formed to bear -on the external surface ofthe pad, and means for detachably securing the cover to the disk.

2. A bufing Wheel comprising a disk having'a' thin periphery and dishedto form a projecting side and a recessed side, an clastic annularpad'substantially V shaped in cross section and adapted to bear on theperiphery and portions of the sides of the disk, a cover composed of asheet of flexible material formed to cover the projecting side of thedisk and the pad, the margin of the cover being ada ted to conform todie recessed side of tie disk, a clamping plate adapted to enter thesaid recessed side and

